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N.. C. BASSETT.

OPERATING MEGHANISM FR HYDRAULIC ELEVATO'R VALVES.

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(No Model.) 3 Sheets-Sheet "1.

N. C. BASSETT. OPERATING MBCHANISM PQR HYDRAULIC ELEVATQR VALVES. No. 476,861. Patented June 14, 1892.

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No. 476,861. 'Patented June 14, 1892.

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N. o. BASSETT. OPERATING MEGHANISM FOR HYDRAULIC BLEVATOR VALVES.

JVM/mm CWM/M TnUerLuru .zgfesfa Ja 7%]5? Patented June 14, 11892.

UNITED ,STATES PATENT OFFICE.

NORMAN C. BASSE/FT, OF CHICAGO, ILLINOIS,ASSIGNOR TO TIIE O'IIS BROTHERS da COMPANY, OF NEW YORK, N. Y.

OPERATING MECHANISNI FOR HYDRAULlC-ELEVATOR VALVES.

SPECIFICATION forming part of Letters Patent No. 476,861, dated J une 14, 1892.

Application filed February 1l, 1885. Serial 110.155,625. (No model.)

To all whom t may conoci/'n.-

Be it known that I, NORMAN C. BASSETT, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Operating Mechanism for Hydraulic-Elevator Valves, of which the following is a specification.

My invention consists in certain improvements in elevating apparatus whereby the manipulation of the large or main valve from the cage is effected with but little exertion on the part of the operator and without the use of the ordinary hand-ropes for conveying motion from the cage tothe valve, the said improvements being .fully set forth hereinafter, and illustrated in the accompanying drawings, in which-- Figure 1 is a side eleva-tion in part section of an elevator, illustrating my improvements; Fig. 2, an elevation showing the cage, one of the guides, and appliances for conveying motion from the cage to thevalve devices. Fig. 3 is an enlarged section of part of the auxiliary-valveoperating engine. Fig. 4 is a plan of the piston-rod and connections shown in Fig. 3; Fig. 5, an end view of the parts shown in Fig. 3; Fig. 6, a section of the main valvecasing, valve, and auxiliary engine; Fig. 7, a section on the line 1 2, Fig. 2, enlarged.

In the drawings the elevating-engine is shown as consisting of a horizontal cylinder A, provided with a piston A2 and piston-rod carrying a traveling sheave A7, round which and round sheaves A A5 passes the cable or flexible suspensory A3, the end of which is connected to the cage C', traveling between guides upon vertical supports A6 A6. The motor iiuid is conducted by a supply-pipe S2 to a valve-casing S8 and iiows to and from the end of the working cylinder A through a pipe A10 and is discharged from the valve-casing S8 through a discharge-pipe D. The valve-cas ing SS is enlarged at one end to form a cylinder C of a valve-actuating engine, the piston P of which is connected by a stem R with the main valve a, and the piston-rod R extends through a packed opening in the head II of the cylinder. The pressure of the motor fluid is made to operate through the auxiliary engine upon the valve a, so as to throw the latter by the adjustment of an auxiliary or engine valve V', which slides in a chest V, com municating through a port o with the engine; cylinder at a point adjacent to the head I-I, and the auxiliary valve is connected by any suitable appliances. with the cage C', so that the attendant therein can, by adjusting such valve, control the engine, and thereby move the main valve a without the exertion which would be requisite if the same were moved by connections extending directly to the cage. To st-andardsor stationary supports S is pivoted a lever L', connected by a link L with the valve V', and the casing of the latter is provided Withaport,communicatingthrough a pipe d' with the water-supply-for instance, with the chest or casing SS-and also with the discharge-port y, communicating with a pipe (l, leading to the main discharge-pipe D. The shifting-rope or other appliance or device leading to the cage is connected to the end L2 of the lever L', so that by vibrating said lever the auxiliary valve V' may be carried to either of the positions necessary to close the port 0 or open it to the discharge or to the supply. If the valve V is thrown to the right, the water between the piston P and the head of the cylinder C will pass to the discharge-port Y under the action of the press ure upon the left face of the piston ll), and the latter Will move to the right and open the pipe A10 into the discharge D, so that the main piston A2 will be carried toward the head H2 of the working cylinder by the weight of the Cage in descending. If the valve V is moved to the left, the pressure from the supply upon the right-hand face of the piston will carry the said piston and valve a to the left and will admit the water under pressure against the right-hand face ofthe working piston A2 and will carry the latter and the sheave A7 to the left, thereby raising the cage. In order that the adjustment of the auxiliary valve may effect a corresponding and proportionate adjustment of the main valve a, a partial con nection is made between the pistonrod R and the auxiliary valve through the medium of the leverL, which is forked and provided at each end with a barrel B, a clamp composed of two sliding jaws B', the stem S5 of each of which extends through the said barrel and against which bears a spiral spring S2, tending to thrust the jaw inward. The piston-rod R is IOO provided with shoulders E E', midway between which on the sides of the piston-rod are rounded lugs or enlargements E2, for a purpose described hereinafter. To limit the movement of the clam p-jaws B B,checknuts N 8 are screwed upon the threaded ends of the stems S5. When the parts are in the position shown in Fig. 3, the elevator is at rest and the jaws B B are in contact with the enlarged lugs E2 and are forced back into the barrels. If now the lever L is forced to the left,so as to carry the engine-valve V to the left and admit the pressure upon the right-hand side of the piston P, the jaws B will be carried to the right from the lugs E2 and the piston P and main valve a will be carried to the left, thereby opening the pipe A10 and permitting the water to flow against the right-hand face of the working piston A2 and move the latter to raise the cage. As the valve d nears its position at the left the lug .E by contact with the upper end of the lever L will carry the latter to the left until it is in a vertical position and the valve V closes the port o, when the further movement of the valve a will bearrested, leaving the port leadingr to the pipe A10 wholly open. Should it now be desired to arrest the upward movement of the cage, the lower end of the lever L is carried to the right, when the pressure upon theleft face of the piston P will carry the same toward the right until the lugs E2 are brought against the jaws B, when the lever Lwill be moved until it is in an upright position and the valve V has closed the port o, when the further movement of the parts will stop, at which time the valve dwill close the end of the pipe A10 and the further movement of the main piston will cease. If it should now be necessary to lower thecage, the lower end of the lever L is moved to the right, permitting the water to discharge from the right ofthe piston P, when the latter will move to the right and the valve a will uncover the end of the pipe A10 and the cage will descend. The piston P will continue its motion to the right until the end of the pipe A10 is wholly uncovered, when lthe contact of the lug E with the upper end of the lever L will carry thelattcr to a vertical position, when the valve V will close the port o and the valve d will be arrested at the right of the end of the pipe A10.

By the parts above described pressure is brought to shift the valve a to one side or the other of the pipe A10 to discharge the water from the main cylinder or admit it under pressure thereto, and the movement of the piston P in either direction causes the lever L and the valve V to be brought to a central position and arrests the valve a as it reaches the termination of its movement in either direction, or when it arrives in a position to close the pipe A10 upon moving toward the latter from either terminal position. While the frictional contact of the lugs E2 with the lever L of the clamps thereof is sufficient to insure the movement of the lever Lriesci said valve a reaches either of its terminal positions, and the lever L is capable of being adjusted independently of the piston-rod, but is always moved automatically by the latter at the termination of its proper movement, so as to close the port o.

It will be obvious that other means than those described for creating a frictional resistance to the movement of the lever L past a point midway between the stops E E may .y

be employed.

The strength or grip with whichv the jaws act upon the lugs may be readily adjusted by using caps N, screwing upon the external threaded portions of the barrels B and capable of being set to compress the springs S2 to any desired extent.

The engine-valve, as well as the main valve a, may be of different forms, according to the character of the hydraulic engine and of the valve-operating engine, and different connec-v tions between the piston-rod and the enginevalve may be employed for operating the said engine-valve positively and directly from the movement of the piston-rod. I am aware that various arrangements of auxiliary valves in connection with engines for operating the main valves of hydraulic elevators have been used; but my invention differs from those heretofore employed in securing the automatic closing of the auxiliary valve by connections between the piston-rod and the said valve, as set forth.

While the engine-valve may be operated from the cage through the medium of the ordinary shifting-rope attached to the level' L', I prefer to operate the same through the medium of a vertical rod or shaft arranged in proximity to the path of the cage, connected to the engine-valve, and capable of being turned or locked from within the cage, whatever may be the position of the latter. One arrangement for carrying out this mode of operating the valve is illustrated in Figs. l and 2 of the drawings, in which R5 is the rod or shaft, provided at the top and bottom with bearing-pieces B6 B7, adapted to sockets in brackets B4L B5. To prevent undue friction at the lower bearing end of the shaft R5, the latter is provided at the upper end with a cap l), which bears upon the top of the bracket B4 and supports the entire weight of the tube, this mode of support having the further advantage of preventing any springing or buckling of the shaft and maintaining it perfectly straight throughout. An arm R4 is secured by nuts b to the lower bearing-piece of the IOO shaft below the bracket B5 and is connected by a rod R3 to the end L2 ot' the lever L". Upon the shaft R5 is fitted a tube or sleeve S3 so as to slide easily upon the shaft Without turning independently of the latter, and the said sleeve S3, which is cylindrical externally, is litted to a bearing in a bracket B8, connected to the car, so as to be carried with the latter in its vertical movements. A bevelpinion e is secured to or forms part of the upper end of the sleeve S3 and gears with abeveled pinion f upon a shaft g, turning in a horizontal bearing in the bracket Ba and carrying a lever L3, which extends through a slot into the cage in a position convenient to be operated by the attendant. By raising or lowering the lever L3 the attendant can rock the pinion f, and thereby turn the pinion c, and with it the sleeve S8 and the shaft R5, so as to swing the arm R4 and vibrate the lever L", this operation being eifectcd at any point in the well in which the cage may be placed, and when the latter is moving or at rest.

The vertical shaft may, without departing from the principle of my invention, be supported in a different manner from that dcscribed, may be differently connected to the valve or valve-operating appliances, and different means may be used for turning the shaft from Within the cage, as will be obvious to any skilled mechanic, and this mode of operating valves from avertical shaft maybe employed in those cases Where the main valve is operated directly without the use of an auxiliary engine.

Although l have shown the auxiliary engine provided with a cylinder forming part of the main valve-casing, it will be apparent that the two may be wholly separated and independent of each other.

Without limiting myself to the precise construction and arrangement of parts shown and described, I claim- 1. The combination of the cage, the main operating-engine, an auxiliary engine con nected to the valve of the main engine, a lever connected to the rod ofthe auxiliary engine by a clamp frictionally engaging the valve-rod and to the valve-rod, and having its fulcrum between the connections to impart a movement less in extent and opposite in direction from the piston to the valve, and connections, substantially as described, between the lever and cage, whereby the auxiliary valve may be moved from the cage independently of the main valve, while the movement of the latter is transferred to the auxiliary valve, substantially as and for the purpose described.

2. In a hydraulic elevator, the combination of the car, lifting-cylinder, controlling-valve, auxiliary cylinder C, piston P, rod R, having a continuation, as a bar B3, and heads E E', lever L', link L, auxiliary valve V, passage o, and a fulcrum on which the lever L vi brates, by means of which the piston P closes the valve V as the former approaches either end of its stroke, substantially as described.

3. The combination of the car, lifting-cylinder, main valve and valve-rod having projections E E E2, auxiliary valve, and a connectinglever between the two provided with a clamp, whereby the auxiliary valve while carried with the main valve may be moved independently thereof at all times, substantially as and for the purpose set forth.

fl. The combination of the piston connected to the main valve of a hydraulic elevator, the piston-rod provided withthe rounded lugs E2, an auxiliary valve, and a lever pivoted tothe stem of the auxiliary valve and having a movable connection with the rod of the piston through the medium of a clamp frictionally engaging the rod, substantially as described, whereby the friction is increased at one point when it engages with the said lugs E2 of the connection without interfering with the positive independent adjustment of the lever, for the purpose set forth.

5. The combination of the cage, the operating engine and its valve, an auxiliary engine provided with a piston, piston-rod, valve, and valve-rod, and a leverconnected with the cage and with the piston-rod by a clamp and with the valve-rod of the auxiliary engine and adjustable independently of the said piston-rod, whereby the auxiliary valve is moved by the movement of the auxiliary piston, but can be moved from the cage Without the movement of said piston7 substantially as and for the purpose set forth.v

G. The combination of the main valve of an elevator apparatus and auxiliary engine provided with a piston and piston-rod and auxiliary valve provided with a stem, a leverconnected with the auxiliary valve and provided with frictional connections between it and the piston-rod of the auxiliary engine, the cage of the elevator, and connections between the latter and the auxiliary valve, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

NORMAN C. BASSETT. Witnesses:

FRANK E. HERDMAN, WILLIAM E. SLossoN.

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